ISO 9001 & AS9100 Certified CNC Turning Facility
CNC Turning Services
Baetro provides precision CNC turning services for cylindrical parts, shafts, and threaded components — with instant online quotes, free DFM feedback, and parts shipping in as little as 3 days. Our Qingdao facility runs live-tooling lathes and Swiss turning centers, holding tolerances to ±0.001 inch with full CMM inspection and material traceability on every order.
Whether you need a single prototype shaft or a production run of 10,000 bushings, CNC turning delivers concentric, repeatable cylindrical geometry faster and more cost-effectively than milling for rotational parts. At Baetro, we do not just run lathes. Our engineers review your CAD files before the first chip flies, spotting opportunities to reduce cycle time and improve part quality.
±0.001″
Turning tolerance
3–7 days
Standard lead time
Free DFM
On every quote
MOQ 1
Prototype to production
CNC Turning Fundamentals
What Is CNC Turning?
CNC turning is a subtractive manufacturing process in which a bar stock or chuck-mounted workpiece rotates against a stationary cutting tool. A computer-guided lathe removes material to produce cylindrical features — diameters, bores, threads, grooves, and tapers — with high concentricity and repeatability.
Unlike CNC milling, which spins the tool and moves the workpiece, turning spins the workpiece and feeds the tool along its axis or across its face. This difference makes turning the natural choice for parts with rotational symmetry: shafts, pins, bushings, couplings, and valve bodies. A lathe also produces smoother surface finishes on cylindrical areas than a mill because the cutting edge engages the workpiece continuously rather than intermittently.
Rotational Accuracy
Excellent concentricity and repeatability on cylindrical features
Cylindrical Features
Ideal for diameters, bores, threads, grooves, and tapers
Live Tooling Ready
Cross-holes, flats, and slots machined in one setup
Cost-Effective for Round Parts
Faster and more economical than milling for rotational symmetry
Best Process for Rotational Parts
Produces shafts, pins, bushings, and threaded components with superior concentricity and surface finish.
Turning Capabilities
Our CNC Turning Capabilities
From standard 2-axis shafts to complex mill-turn parts and Swiss precision components, Baetro provides a full range of CNC turning services for prototypes and production.
2-axis cnc turning
Standard CNC Lathe Turning
Standard turning operations handle the bulk of cylindrical part production. We use bar feed and chucking lathes to produce straight, stepped, and tapered diameters.
- Best for: shafts, pins, bushings, spacers, and fittings.
- Processes: straight turning, facing, grooving, and threading.
- Capacity: diameters up to 12 inches, lengths up to 24 inches.
live tooling
Live Tooling and Mill-Turn
Live tooling adds powered milling spindles to a CNC lathe, machining cross-holes, flats, and keyways while the part remains chucked in one setup.
- Best for: parts with holes, flats, or slots on turned bodies.
- Advantages: single setup, better datum consistency, shorter lead times.
- Applications: drive shafts, valve stems, threaded adapters.
swiss cnc turning
Swiss CNC Turning
Swiss machining uses a guide bushing to support bar stock close to the cutting tool, eliminating deflection on small-diameter precision components.
- Best for: medical devices, electronics, aerospace fasteners under 1 inch.
- Tolerances: ±0.0002 inch on critical diameters.
- Surface finish: Ra 0.4 μm on optimized setups.
Procurement confidence
Why Choose Baetro for CNC Turning?
Engineers and procurement managers choose Baetro for reliable CNC turning services with fast quoting, live-tooling capability, Swiss precision, transparent documentation, and responsive project support.
Free DFM Feedback
Our engineers review your CAD file and suggest design optimizations that reduce cycle time, improve manufacturability, and lower cost before production begins.
Instant Online Quotes
Upload your STEP or IGES file, select material and finish, then receive pricing and lead time in under 60 seconds without waiting for manual sales follow-up.
±0.001 Inch Tolerance Capability
Precision turning centers support tight tolerances on cylindrical geometries, with Swiss equipment reaching ±0.0002 inch and CMM inspection available.
Live Tooling & Swiss Turning
Our Qingdao facility operates live-tooling lathes and Swiss turning centers, giving us the flexibility to handle simple shafts, complex mill-turn parts, and slender precision components.
No Minimum Order Quantity
Order one prototype or scale to production volumes with the same turning process, quality controls, and material traceability across every order size.
Fast Lead Times & Documentation
Standard orders ship in 3–7 days, with inspection reports, material certifications, surface finish verification, and dedicated project manager support included.
Material library
Materials for CNC Turning
Material selection drives machinability, surface finish, and cost. We machine 50+ materials with full certifications and traceability available for every project.
Metals
Aluminum: 6061 and 7075 turn beautifully with sharp chips, low tool wear, and excellent surface finish. The go-to choice for prototypes and lightweight production parts. Learn more about aluminum CNC machining
Stainless Steel: 304 and 316 offer corrosion resistance but work-harden quickly. 17-4 PH delivers higher strength for aerospace and medical applications.
Carbon Steel: 1018 machines easily and costs less than stainless. 4140 alloy steel adds hardness and wear resistance for industrial shafts and pins.
Brass and Copper: Both machine with near-mirror finishes. Brass is ideal for decorative or electrical components. Copper produces excellent thermal-conductive parts.
Titanium: Ti-6Al-4V turns well on rigid equipment, delivering exceptional strength-to-weight ratio for aerospace and medical parts.
Plastics
PEEK: High-temperature, medical-grade, chemical-resistant polymer.
POM (Delrin): Excellent dimensional stability for precision mechanical parts.
Nylon (PA6, PA66): Wear-resistant, low friction, suitable for bearings and bushings.
PTFE: Low friction, chemical-resistant, ideal for seals and insulators.
ABS: Impact-resistant, cost-effective prototyping material.
Material
Aluminum
6061 and 7075 alloys for general and aerospace applications with excellent machinability.
Material
Stainless Steel
304, 316, and 17-4 PH grades for corrosion resistance and high-strength applications.
Material
Titanium
Grade 2 and 5 for aerospace and medical applications requiring high strength-to-weight ratios.
Material
PEEK
High-performance plastic for demanding thermal, chemical, and biocompatible applications.
Post-processing
Surface Finishes for CNC Turned Parts
Parts ship with an as-turned finish by default, but we offer secondary surface treatments so your components arrive ready for assembly or end-use.
| Finish | Description | Best For |
|---|---|---|
| As turned | Ra 0.8–1.6 μm, tool marks visible | Functional prototypes, general-purpose components |
| Bead blasted | Uniform matte texture that hides tooling marks | Cosmetic parts, preparation for coating |
| Anodizing (Type II) | Decorative, corrosion-resistant coating | Aluminum consumer products, enclosures |
| Anodizing (Type III / Hardcoat) | Wear-resistant, thicker coating | Industrial aluminum parts, tooling |
| Passivation | Restores corrosion resistance on stainless steel | Medical and marine stainless components |
| Plating | Nickel, chrome, or zinc deposition | Conductivity, hardness, corrosion protection |
| Polishing | Mirror-like surface finish | Decorative parts, sealing surfaces, optical components |
Finish selection affects lead time. As-turned parts ship fastest. Anodizing or plating typically adds 2–3 days. During DFM review, our engineers recommend finishes based on your application requirements.
Engineering data
CNC Turning Tolerances & Precision
Tolerance is where CNC turning suppliers separate reliable production from risky sourcing. At Baetro, we specify clear standard and precision tolerance options for your cylindrical parts.
Standard Tolerances
| Feature Type | Standard Tolerance | Precision Tolerance |
|---|---|---|
| General dimensions | ±0.005" (±0.13 mm) | ±0.001" (±0.025 mm) |
| Diameters (turned) | ±0.003" (±0.08 mm) | ±0.0005" (±0.013 mm) |
| Concentricity | 0.005" (0.13 mm) | 0.002" (0.05 mm) |
| Thread pitch diameter | ±0.005" (±0.13 mm) | ±0.002" (±0.05 mm) |
| Surface finish (Ra) | 0.8–1.6 μm | 0.4 μm |
Precision tolerances are inspected on CMM equipment, with dimensional inspection reports available for shipment and quality review.
When to Choose Precision
- Standard tolerance: prototypes, proof-of-concept parts, non-critical fitment, and budget-sensitive projects.
- Precision tolerance: bearing surfaces, press fits, aerospace fasteners, medical components, and sealing diameters.
- Cost impact: precision tolerances typically add 20–50%, depending on geometry, material, and inspection requirements.
- Swiss turning: tolerances tighter than ±0.001 inch require Swiss equipment or specialized setups. Contact our engineers for feasibility review.
Quality Assurance
Quality Inspection and Reporting
Every turned part leaves our facility with documented evidence of conformance. Quality is built into every stage, from material verification to final dimensional inspection.
Our Quality Systems
- ISO 9001:2015 certified quality management system
- AS9100D certified for aerospace quality standards
- Full material traceability from raw stock to finished part
- In-process inspection at multiple production stages
- CMM final inspection on Coordinate Measuring Machine equipment
- Surface roughness testing for finish validation
- First-article inspection reports for production approval
- Statistical process control for production run monitoring
What You Receive with Every Shipment
Every order includes a comprehensive inspection report documenting key quality data for your CNC turned parts.
- Dimensional measurements against your drawing or CAD model
- Material certification and traceability
- Surface finish verification when specified
- Pass/fail status for all critical dimensions
- Inspector signature and inspection date
Applications
Industries We Serve with CNC Turning
CNC turning supports industries with different requirements for tolerance, material selection, surface finish, and inspection documentation on rotational components.
Industry
Aerospace & Defense
Shafts, alignment pins, fasteners, and hydraulic fittings demand tight tolerances and full traceability. Our AS9100 certification supports these requirements directly.
Industry
Medical Devices
Surgical instruments, implant tooling, and device housings often require Swiss turning for small diameters and biocompatible materials like titanium and 316 stainless steel.
Industry
Automotive
Bushings, connectors, sensor housings, and valve components turn efficiently in medium to high volumes with consistent quality.
Industry
Electronics
Connectors, standoffs, and heat-dissipation pins turn quickly from copper or aluminum bar stock with clean finishes.
Industry
Industrial Equipment
Valve stems, hydraulic fittings, and pump components benefit from turning's superior concentricity and surface finish on sealing surfaces.
Industry
Energy & Hydraulics
Precision couplings, adapters, and high-pressure fittings for oil, gas, and fluid power systems requiring reliable sealing surfaces.
Prototypes & Production
CNC Turning for Prototypes & Production
CNC turning enables a seamless transition from prototype to production—same process, same quality, scaled to your volume.
Prototype CNC Turning
Fast parts for design validation without tooling commitments.
- No minimum order quantity—order 1 piece
- 3–7 day standard lead times
- Same tolerances and quality as production parts
- Free DFM feedback for manufacturability issues
- Multiple material options for design comparison
Low-Volume Production
10–1,000 parts with cost-effective CNC turning and flexible scheduling.
- Economical for volumes up to 1,000+ parts depending on complexity
- Consistent quality across batches with documented processes
- Easy design changes between runs without tooling modification
- Ideal for product launches, limited editions, and bridge production
High-Volume CNC Turning
Optimized programs, in-process inspection, and dedicated machine capacity ensure throughput for larger production runs.
- Cycle time optimization for high-volume efficiency
- In-process and final inspection routines
- Dedicated machines for consistent throughput
- Fixed setup costs spread across quantity, reducing per-part price
How it works
Our CNC Turning Process
Working with Baetro is straightforward. Here is the controlled process from CAD file upload to finished CNC turned parts.
Upload Your CAD File
Send your design in STEP, IGES, SolidWorks, or Parasolid format. STEP files are preferred for CNC turning projects.
Receive Quote + DFM Feedback
In under 60 seconds, review pricing, lead time, and manufacturability notes for thin walls, deep bores, or tight tolerances.
Approve and Place Order
Select material, finish, quantity, and shipping method. Your project manager confirms the order and production schedule.
Production Turning
Parts are CNC turned to approved programs, with dimensional checks at critical stages to identify deviations before completion.
Final CMM Inspection
Every part receives final inspection on CMM equipment, with surface finish verification when required by your specification.
Ship with Documentation
Parts are packaged with inspection reports, material certifications, and required documents, then shipped worldwide by express carrier.
Cost considerations
CNC Turning Cost Factors
Understanding what drives CNC turning costs helps you make informed design and material decisions.
- Material: Aluminum is economical; steel and brass are mid-range; titanium and Inconel are premium.
- Part Complexity: Live-tooling features, deep bores, internal threads, and multiple setups increase cycle time and cost.
- Tolerances: Tighter tolerances (±0.001") require slower feeds, frequent measurement, and dedicated tooling.
- Surface Finish: As-turned is cheapest; anodizing, plating, or polishing add process steps and lead time.
- Order Quantity: Low volumes have higher per-part cost due to setup; high volumes reduce per-part cost significantly.
- Lead Time: Standard 3–7 day lead times included; expedited delivery increases cost.
FAQ
Frequently Asked Questions
Answers to common questions about CNC turning tolerances, materials, lead times, DFM feedback, live tooling, and quality control.
What tolerances can your CNC turning achieve?
Standard tolerance follows ISO 2768-f, approximately ±0.005 inch on general dimensions for metal parts. Precision tolerances to ±0.001 inch are achievable on optimized setups, and Swiss turning reaches ±0.0002 inch on critical diameters. Every precision part is inspected on CMM equipment with full documentation.
What materials can you CNC turn?
We machine 50+ materials including aluminum (6061, 7075), stainless steel (304, 316, 17-4 PH), carbon steel (1018, 4140), brass, copper, titanium (Grade 2, 5), PEEK, POM, nylon, PTFE, and ABS. Full material certifications and traceability are available. Not sure which material to choose? Our engineers recommend materials during DFM review.
How fast can I get CNC turned parts?
Standard lead time is 3–7 days from order confirmation to shipment. Simple aluminum parts often ship in 3–4 days. Complex parts with tight tolerances or secondary finishing may take the full 7 days. Express options are available for urgent prototypes. Upload your CAD file for an instant quote with exact lead time.
Do you offer design for manufacturability (DFM) feedback?
Yes—and it's free with every quote. Our engineers review your CAD file and suggest design optimizations that improve manufacturability, reduce cost, and maintain function. Typical DFM feedback identifies thin walls, deep bores, unnecessarily tight tolerances, and accessibility issues. Customers report 20% or greater cost reductions from implementing DFM suggestions.
What is your minimum order quantity?
There is no minimum. You can order 1 piece or 100,000 pieces. Our process, quality standards, and inspection routines are the same regardless of quantity. No penalties for small orders, no minimums to meet. This makes CNC turning ideal for prototypes, low-volume production, and testing before scaling.
What file formats do you accept?
We accept STEP (.stp, .step), IGES (.igs, .iges), SolidWorks (.sldprt), and Parasolid (.x_t) files. STEP is preferred for CNC machining quotes because it preserves geometric data accurately across CAD platforms. PDF drawings are helpful for tolerances, threads, and surface finish callouts.
Can you add milled features to a turned part?
Yes. Our live-tooling lathes machine cross-holes, flats, keyways, and slots while the part remains chucked. This single-setup approach improves accuracy and reduces lead time compared to moving the part to a separate mill. It often shaves 20–30 percent off total cycle time.
What is Swiss CNC turning?
Swiss turning uses a guide bushing to support bar stock close to the cutting tool, eliminating deflection on slender parts. It excels at medical device components, electronics connectors, and aerospace fasteners under 1 inch diameter. Tolerances routinely reach ±0.0002 inch with surface finishes down to Ra 0.4 μm. Learn more about Swiss machining capabilities.
Quote-ready manufacturing
Get Your CNC Turning Quote Today
When you need precision turned parts — whether a single prototype shaft or a recurring production order of threaded bushings — Baetro delivers the tolerances, speed, and engineering support your project demands.
Our Qingdao facility runs 30+ CNC machines, including live-tooling lathes and Swiss turning centers. Every order gets inspected on CMM equipment, and we provide full inspection reports with every shipment. Upload your CAD file for an instant quote with live pricing, lead times, and free DFM feedback.
Parts ship in 3–7 days. No minimum order quantity. ISO 9001 & AS9100 certified.
Not ready to upload a file? Contact our engineers to discuss your project, review material options, or get guidance on tolerance selection.